Transfer of biosynthesized gold nanoparticles from water into an ionic liquid using alkyltrimethyl ammonium bromide: an anion-exchange process.
Transfer of biosynthesized gold nanoparticles from water into an ionic liquid using alkyltrimethyl ammonium bromide: an anion-exchange process.
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DOI：
10.1021/la103586f
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发表时间：
2011-11
期刊：
影响因子：
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通讯作者：
Yao Zhou;Wenshuang Lin;Huixuan Wang;Qingbiao Li;Jiale Huang;Mingming Du;Liqin Lin;Yixian Gao;Ling Lin;N. He
中科院分区：
文献类型：
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作者：
Yao Zhou;Wenshuang Lin;Huixuan Wang;Qingbiao Li;Jiale Huang;Mingming Du;Liqin Lin;Yixian Gao;Ling Lin;N. He
在烷基三甲基溴化铵的帮助下，将生物合成的金纳米颗粒 (GNP) 从水中转移到疏水性离子液体 (IL) [Bmim]PF(6) 中。以十六烷基三甲基溴化铵（CTAB）为例说明了相转移机理。通过 zeta 电位分析证明了 GNP 和 CTAB 之间的相互作用。此外，还发现了 CTAB 和 IL 之间的阴离子交换过程。在此过程中，GNPs上原位形成的疏水性CTAPF(6)导致GNPs疏水化，从而发生相转移。发现相转移效率依赖于尺寸。
Biosynthesized gold nanoparticles (GNPs) were transferred from water to a hydrophobic ionic liquid (IL), [Bmim]PF(6), with the assistance of alkyl trimethyl ammonium bromide. The phase transfer mechanism was illustrated through the exemplification of cetyltrimethyl ammonium bromide (CTAB). Interaction between GNPs and CTAB was demonstrated through zeta potential analysis. Moreover, an anion-exchange process was discovered between CTAB and IL. During the process, the hydrophobic CTAPF(6) formed in situ on the GNPs led to the hydrophobization and thus phase transfer of the GNPs. The phase transfer efficiency was found to be size-dependent.